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CVE-2026-118986

HIGH · 7.5 CVSS Gepubliceerd: CWE-338

Beschrijving NL

CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand(). The secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline. An attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.

Origineel (Engels) tonen

CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand().

The secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline.

An attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.

References